I think he cleans the division out. No champion there is overly exceptional like Zab. Zab lost to one average guy, who was bigger therefore basically bullied him and physced him out. No champ at 140 bar Hatton could do that to Zab. Hatton beats him but I think he would give him a few hairy moments like he did Cotto.
Yeh if Zab went down to 140, he'd clean up. Him vs hatton would be good, the only guy who might take Zab would be hatton, but Zab could win that fight too, he has good power.
I think Zab would tear up the 140. IMO, both he AND PBF are awful small for 147. Stand either of those two next to any of the top guys (who all make 147 but come fight time are much more) and they look tiny. they are naturally much smaller.
Plenty of compettiiton here for Judah. I think he fights a tune-up and then goes for title shot though. He will do well.
Zab is still able to make 140. If I'm not mistaken his last fight was at 140 or pretty close to it. He could do fine if he dedicated himself but who knows.